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DETERMINATION OF PARTIAL CROSS SECTIONS OF INELASTIC p + p INTERACTIONS FOR 10 GeV/c MOMENTA

Takibaev, Zh.S. ; Boos, E.G. ; San'ko, L.A. ;
Izv.Akad.Nauk Kaz.SSR Ser.Fiz.Mat. 1972 (1972) 20, 1972.
Inspire Record 1408820 DOI 10.17182/hepdata.70518
1 data table

No description provided.


The Reaction $p + p \rightarrow p + p + {\pi}^0$ in the Energy Range from Threshold to 665 MeV

Dunaitsev, A.F. ; Prokoshkin, Yu.D. ;
Sov.Phys.JETP 9 (1959) 1179, 1959.
Inspire Record 1408597 DOI 10.17182/hepdata.70460
2 data tables

No description provided.

No description provided.


Pion Production in 650-MeV p-p Collisions

Guzhavin, V.M. ; Kliger, G.K. ; Kolganov, V.Z. ; et al.
Sov.Phys.JETP 19 (1964) 847-854, 1964.
Inspire Record 1387586 DOI 10.17182/hepdata.70070

The angular and energy distributions of pions produced by 650-MeV protons and pion-nucleon correlations were studied using a liquid hydrogen bubble chamber. The present investigation indicates that the experimental angular distributions of neutral and charged pions are consis- tent with the assumption of isotopic spin conservation. The contributions of rrN subsystem states with isospin T 11'N = 7' 2 and % are measured; the contribution of the latter is 72 ± 3%.

1 data table

No description provided.


Single-Pion Production in pp Collisions at 0.95-GeV/c (I)

The COSY-TOF collaboration El-Samad, S Abd ; Bilger, R. ; Brinkmann, K.-Th. ; et al.
Eur.Phys.J. A30 (2006) 443-453, 2006.
Inspire Record 725793 DOI 10.17182/hepdata.43429

The single-pion production reactions $pp\to d\pi^+$, $pp\to np\pi^+$ and $pp\to pp\pi^0$ were measured at a beam momentum of 0.95 GeV/c ($T_p \approx$ 400 MeV) using the short version of the COSY-TOF spectrometer. The implementation of a central calorimeter provided particle identification, energy determination and neutron detection in addition to time-of-flight and angle measurements. Thus all pion production channels were recorded with 1-4 overconstraints. The total and differential cross sections obtained are compared to previous data and theoretical calculations. Main emphasis is put on the discussion of the $pp\pi^0$ channel, where we obtain angular distributions different from previous experimental results, however, partly in good agreement with recent phenomenological and theoretical predictions. In particular we observe very large anisotropies for the $\pi^0$ angular distributions in the kinematical region of small relative proton momenta revealing there a dominance of proton spinflip transitions associated with $\pi^0$ $s$- and $d$-partial waves and emphasizing the important role of $\pi^0$ d-waves.

8 data tables

Total cross section measurements.. Errors are mainly systematic.

Measured angular distribution for elastic P P scattering in the CM system normalised to the data in the SAID database (Arndt et al. PR C62,034005(2000). This measurement is made to determine the luminosity.

The measured pion angular distribution in the CM system in the reaction P P --> DEUT PI+.

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Anisotropy in the pion angular distribution of the reaction pp ----> pp pi0 at 400-MeV

Thorngren Engblom, P. ; Negasi Keleta, S. ; Cappellaro, F. ; et al.
Phys.Rev. C76 (2007) 011602, 2007.
Inspire Record 725409 DOI 10.17182/hepdata.31500

The reaction pp -> pp pi0 was studied with the WASA detector at the CELSIUS storage ring. The center of mass angular distribution of the pi0 was obtained by detection of the gamma decay products together with the two outgoing protons, and found to be anisotropic with a negative second derivative slope, in agreement with the theoretical predictions from a microscopic calculation.

2 data tables

Acceptance corrected centre of mass PI0 angular distribution, normalized to 92.3 +- 7.2 MUB (Bilger et al.).

Acceptance corrected centre of mass PI0 angular distribution for relative proton momenta < 53 MeV, normalized to Bilger et al... Statistical errors only.


Cross sections of the p p --> p p pi0 reaction between 310-MeV and 425-MeV

Bilger, R. ; Brodowski, W. ; Calen, H. ; et al.
Nucl.Phys. A693 (2001) 633-662, 2001.
Inspire Record 566664 DOI 10.17182/hepdata.36159
1 data table

ABSOLUTE TOTAL CROSS SECTIONS.


Study of the reaction p p ---> p p pi0 within 10-MeV above the threshold

The COSY-TOF collaboration AbdEl Samad, S. ; Bilger, R. ; Bohm, A. ; et al.
Eur.Phys.J. A17 (2003) 595-606, 2003.
Inspire Record 605377 DOI 10.17182/hepdata.43625

Kinematically complete measurements of the $pp\to pp\pi^{0}$ reaction were performed for beam energies in the range $292 - 298 $MeV. By detecting both protons in coincidence with the large acceptance COSY-TOF spectrometer set up at an external beam line of the proton synchrotron COSY-Julich, total and differential cross sections and energy distributions were obtained. A strong enhancement is observed in the Dalitz plots resulting from the final state interaction between the outgoing proton pair: the data are well reproduced by Monte Carlo simulations with standard parameters for scattering length $a_0$=-7.83 fm and effective range $r_0$=2.8 fm. The total cross sections exceed the ones measured recently in internal target experiments at IUCF and CELSIUS by roughly 50%. Arguments are presented which link this discrepancy with the effect of the final state interaction pushing yield into the very small-angle region and the near-impossibility of an internal target experiment to cover just this range.

1 data table

Total P P --> P P PI0 cross section.


Measurement of partial wave contributions in p p ---> p p pi0

Meyer, H.O. ; Balewski, J.T. ; Doskow, J. ; et al.
Phys.Rev.Lett. 83 (1999) 5439-5442, 1999.
Inspire Record 504512 DOI 10.17182/hepdata.31354

We report a measurement of the spin-dependent total cross section ratios delta_sigma_T/sigma_tot and delta_sigma_L/sigma_tot of the pp --> pp pi^0 reaction between 325 MeV and 400 MeV. The experiment was carried out with a polarized internal target in a storage ring. Non-vertical beam polarization was obtained by the use of solenoidal spin rotators. Near threshold, the knowledge of both spin-dependent total cross sections is sufficient to deduce the strength of certain participating partial waves, free of any model.

2 data tables

SIG(C=T1-1) and SIG(C=T11) means opposite and parallel transverse beam and target polarizations. The same is for longitudunal (L) polarizations. SIG(C=TOT)is unpolarized total cross section.

SIG(C=L1-1) and SIG(L=11) means opposite and parallel longitudinal beam andtarget polarizations. SIG(C=TOT) is unpolarized total cross section.


Dependence of p p ---> p p pi0 near threshold on the spin of the colliding nucleons

Meyer, H.O. ; Balewski, J.T. ; Dzemidzic, M. ; et al.
Phys.Rev.Lett. 81 (1998) 3096-3099, 1998.
Inspire Record 472992 DOI 10.17182/hepdata.39971

A polarized internal atomic hydrogen target and a stored, polarized beam are used to measure the spin-dependent total cross section Delta_sigma_T/sigma_tot, as well as the polar integrals of the spin correlation coefficient combination A_xx-A_yy, and the analyzing power A_y for pp-> pp pi0 at four bombarding energies between 325 and 400 MeV. This experiment is made possible by the use of a cooled beam in a storage ring. The polarization observables are used to study the contribution from individual partial waves.

1 data table

SIG(C=DEL_T) defined as the cross section with the spins of the colliding protons antiparallel, minus the cross section with spins parallel, using transversely polarized beam and target.


The p p ---> p p pi0 reaction near the kinematical threshold

Bondar, A. ; Calen, H. ; Carius, S. ; et al.
Phys.Lett. B356 (1995) 8-12, 1995.
Inspire Record 406944 DOI 10.17182/hepdata.28488
1 data table

AN OVERALL 5 PCT ERROR IN NORMALIZATION IS NOT INCLUDED.


Measurement of the Cross-section of the Reaction $P P \to P P \pi^0$ in the Region of Dibaryon Resonances

Andreev, Valery P. ; Kravtsov, A.V. ; Makarov, M.M. ; et al.
Z.Phys. A329 (1988) 371-373, 1988.
Inspire Record 266150 DOI 10.17182/hepdata.16595
1 data table

No description provided.


Measurement of the $p p$ Cross-sections in the Momentum Range 0.9-2.0 GeV/c

Shimizu, F. ; Kubota, Y. ; Koiso, H. ; et al.
Nucl.Phys. A386 (1982) 571-588, 1982.
Inspire Record 11839 DOI 10.17182/hepdata.37042
4 data tables

No description provided.

No description provided.

No description provided.

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Total cross-section for p + p ---> p + p + pi0 near threshold measured with the Indiana cooler

Meyer, H.O. ; Ross, M.A. ; Pollock, R.E. ; et al.
Phys.Rev.Lett. 65 (1990) 2846-2849, 1990.
Inspire Record 305682 DOI 10.17182/hepdata.19936
1 data table

No description provided.


EXCLUSIVE ANNIHILATION PROCESSES IN 8.8-GEV ANTI-P P INTERACTIONS AND COMPARISONS BETWEEN ANTI-P P NONANNIHILATIONS AND P P INTERACTIONS

Ward, D.R. ; Simmons, A.J. ; Ansorge, R.E. ; et al.
Nucl.Phys. B172 (1980) 302, 1980.
Inspire Record 158992 DOI 10.17182/hepdata.34487
4 data tables

NORMALIZED TO A TOTAL AP P CROSS SECTION OF 55.9 MB. ANNIHILATION CROSS SECTIONS.

NORMALIZED TO A TOTAL AP P CROSS SECTION OF 55.9 MB. NON-ANNIHILATION CROSS SECTIONS.

NORMALIZED TO A TOTAL P P CROSS SECTION OF 40.0 MB.

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Analysis of two-prong events in proton proton interactions at 6.6 gev/c

Colton, E. ; Ming, Ma.Z. ; Smith, G.A. ; et al.
Phys.Rev. D7 (1972) 3267-3295, 1972.
Inspire Record 82060 DOI 10.17182/hepdata.22134
6 data tables

No description provided.

FITTED OVER 0.05 < -T < 0.5 GEV**2.

No description provided.

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